Door-lock.



J. CALDWELL.

DOOR LOOK.

APPLIOATION FILED JUNE 22, 1912.

Patented Dec. 10, 1912.

nfoz L J. CALDWELL.

DOOR LOOK.

APPLIUATION FILED JUNE 22, 1912.

1,046,438. Patented Dec. 10, 1912.

2 SHEETS-SHEET 2.

' 5] wuewboz To au colauurexh COLUMBIA PLANOGRAPH 60., WASHINGTON. D C

.roHN CALDWELL, or new YORK, N. Y., ASSIGNOR T0 or'ro J. SCHWARZLER, onNEW YORK, N. Y.

DOOR-LOCK.

Specification of Letters Patent.

Patented Dec. 10, 1912.

T 0 all whom it may concern:

Be it known that I, JOHN CALDWELL, a citizen of the United States, and aresident of New York, county and State of New York, have invented acertain new and useful Improvement in Door-Locks, of which the followingis a full, clear, and eXact specification.

This invention relates to a class of locks adapted for use .inconjunction with the doors of buildings, or other structures, andembodies an improved form of certain parts of the door lock shown in myPatent No. 1,028,929, issued June 11, 1912. In this form of door look Iemployed a split cylinder in which is a rotatable key barrel. On onehalf of the cylinder provision is made at quarter turns for receivingtumbler pins which fit in suitable recesses and are subject to theaction of springs. A key slot 6X tends from the outside inwardly of thebarrel, and said slot is provided with lateral apertures on one sidewhich correspond with the position of the tumbler pins so that they maydrop from the recesses of the cylinder into the apertures of the barrel.There are two sets of tumblers, and when in looking contact one set willbe partly within the cylinder and partly within the barrel. Theinsertion of a key in the slot of the barrel will force the set oftumblers projecting in the apertures of the barrel back to itsperipheral edge and into the recesses of the cylinder. By turning thekey the barrel is rotated one quarter of a circle for unlock ing thelock and may be reversely turned for looking it, thus limiting theoperation of the lock and making it somewhat confusing to understand.Moreover, to the key barrel is connected one end of the shank of a knobso that the key barrel and the knob cannot be operated separately forlooking or unlocking a door.

My present invention has for its object primarily to overcome theseobjections by providing a door lock which is adapted to be locked, orunlocked by the use of a key when turned to various determined portionsof a circle, or by manually rotating a knob independently of theemployment of a key. This is accomplished mainly by providing a cylinderadapted to carry any desired number of spaced sets of tumblers, oryielding locking elements, and in the cylinder is a rotatable barrelhaving a key slot and a communicating recess so that by turning thebarrel with a key for a determined distance the door may be locked, orunlocked as clesired. In movable engagement with the barrel is one endof the spindle of a knob and in this end of said spindle is a recess inregister with the slot of the barrel so that when a key is employed tooperate the lock it will be received in the recess of the spindle sothat it may be operated in unison with the barrel, or the'knob may berotated separately for revolving the spindle.

A further object of the invention is to provide a lock of simple andefiicient construction, and which is susceptible of being made so as tobe adapted to be applied upon any suitable door.

With these and other objects in View, the

invention will be hereinafter more particularly described with referenceto the accompanying drawings, which form a part of this specification,and will then bepointed out in the claims at the end of the description.

In the drawings, Figure 1 is a fragmentary side elevation, partly brokenaway, and partly in section, of a door and its frame taken on a line IIof Fig. 2, showing the casing, the bolts, and connecting parts of myimproved door lock. Fig. 2 is a fragmentary vertical longitudinalsection, partly in detail, of the lock and the door. Fig. 3 is a frontelevation of the key barrel, cylinder, and shell of the lock. Fig. 4 isa section taken on the line IIII of Fig. 2. Fig. 5 is a section taken onthe line III-III of Fig. 2. Fig. 6 is a section taken on the line IVIVof Fig. 5. Fig. 7 is a perspective view of the spindle, of the lock.Fig. 8 is a side view of the spindle, and Fig. 9 is a top plan of one ofthe brackets employed on the door frame.

The device, or lock 10 may be applied upon the inside of any suitabledoor, as 11, which is preferably hinged so as to swing in a frame, as12, constructed in a building, or other structure. The lock has a casing13 which is substantially rectangular, or may be of any preferred shape,and said casing is provided with a base-plate 14, a front-plate 15, sidewalls 16 and 17, an upper wall 18,

- and a lower wall 19. The base-plate let may be fastened to the door byscrews 20, or otherwise, and the front-plate may be secured to thebase-plate by bolts 21, or the like. Through the door is a large opening22, and through the base-plate 14 and frontplate 15 of the casingare-alined openings 23 and 24 which are inregister with the opening inthe door, but are considerably smaller in diameter. Midway of the sidewall 17, the upper wall 18, and the lower wall 19 of the casing areopenings 25, 26, 27. A boss or annular flange 28 is provided upon thebase-plate 14 at the wall of the opening thereof, and said annularflange extends inwardly of the casing. Rotatable upon the annular flange28 is a concentric flange 29 of a shank 30 which extends some distancethrough the opening 24 of the front-plate 15, and upon the free end ofsaid shank isa knob 31 held rigidly to the shank by a screw 32, or thelike so that the shank will be rotated when the knob is manuallyrevolved.

Upon one end of the concentric flange 29 is an integrally formed ring33, and to said ring may be pivoted one end of one or a plurality oflinks, or levers 34, 35, 36. To the opposite end of each of the links34, 35, 36 are pivoted one end of bolts 37 38, 39, two of which areadapted to be moved vertically and one laterally in unison when theshank 30 is revolved by the rotation of the knob 31, and each of thebolts 37 and 39 are movable in guides 40 and 41 provided upon the frontplate 15 and extend into the casing 13. All of the bolts 37 38, 39 arealso movably guided through openings in the casing and through brackets40, 41, 42 secured at the ends or sides of thedoor, and also upon theframe of the door are fastened brackets 43, 44, 45. One of the brackets43, 44, 45 are in alinement with one of the brackets 40, 41, 42 so as toreceive the free end of the bolts when moved to lock the door to theframe, and each of the brackets'43, 44, 45 are oval in shape so as toallow the ends of the bolts to be freely received in the brackets shouldsaid bolts be thrownout of alinement therewith by reason of shrinkage ofthe door or its frame. When the knob 31 is turned from right to left theshank 30 will be correspondingly rotated, and the levers 34, 35, 36 willbe moved so as to direct the bolts into the brackets 43, 44, 45. Thedoor will then be locked to the frame, and may be unlocked when theaction of these parts are reversed by turning the knob from left toright. The above described parts of my door lock are substantially thesame as shown in my Patent No. 1,028,929 and I desire it to beunderstood that I do not-claim in this application any part thereof asbeing new and novel.

For the purpose of permitting the bolts 37, 38, 39'and the levers 34,35, 36 to be moved in unison through the medium of a.

key for locking and unlocking the door independently of the knob 31,through the shank 30 of said knob is a square or angular the spindleproper is a recess 49 which is formed in the shape of across so as toreceive the end of a key when positioned either vertically ortransversely. The head 48 of the spindle is movably seated in an annularflange 50 of a key-barrel 51 which is rotatable in a tumbler cylinder 52disposed in the end of the opening 22 of the door which is opposite tothe lock ,casing'so as to be upon the outside of the door.

The tumbler cylinder 52 is preferably formed in two parts, as shown inFig. 5. In one part of the cylinder are recesses 56 and 57 into which issnugly seated corresponding pins provided upon the second part when bothparts are assembled. The cylinder 52 is held against rotation by beingsecured to the base-plate 14 of the lock casing by means of a number ofbolts, or screws 58. One part of the peripheral edge of said cylinder isthreaded so that the threaded end of a ferrule or shell 59 may bescrewed thereon, and the opposite end of said ferrule is flanged so asto provide a neat finish for the look upon the outer face of the doorwhen in place for operation. In the wall of the cylinder 52, andcommunicating with its passage are a number of series of alined recesses60 which are radially disposed with respect to the axial center of thecylinder. I prefer to employ one series of the recesses at each part ofthe cylinder-corresponding to a quadrant thereof, as illustrated, thoughit is evident that I may provide one or any suitable number of series ofthese recesses. In each series of the recesses 60 are sets of movabletumblers 61, one tumbler being disposed in each recess, and serving toforce each tumbler in a direction outwardly of said recess and towardthe key-barrel 51, in each recess is a spring 62.

Longitudinallythrough the key-barrel 51 is provided a key slot 63 whichcommunicates with the cross-shaped recess 49 of the head 48 of thespindle 47. In one part of the wall of the key barrel 51 is also arecess 64 which communicates with one edge of the key slot 63, and saidrecess 64 adapted to be registered with each of the series of alinedrecesses 60 of the cylinder to receive one of the sets of tumblers 61for locking the key barrel, the cylinder, and the other parts of thelock. To move the levers 34, 35, 36 and the bolts 37, 38, 39 by the useof a key so as to lock or unlock the door the key is inserted in theslot 63 of the keybarrel 51 and its end will be guided into the recess49 of the head 48 of the spindle. The set of tumblers seated in therecess 64 of the key-barrel will thereby be forced by contact with thekey to the peripheral edge of the key-barrel and back into theirrecesses of the cylinder. By turning the key from right to leftone-quarter of a circle, or turning it so that the recess 64 of thebarrel will be in register with the next set of tumblers the spindle 47and the knob 31 will be rotated for withdrawing the bolts 37, 38, 39from engagement with the brackets 43, 44, 45 so as to unlock the door.On extracting the key the second set of tumblers will be partly forcedinto the recess of the key barrel, and the barrel and its cylinder willagain be locked together. The door may then be locked from the insideindependently of the use of the key by simply turning the knob 31. Byrepeating the use of the key in this manner and turning the door knob asdescribed the door may be locked or unlocked whenever desired withoutreversing the rotation of the key barrel, though it is evident that thekey may be employed for locking the door as well as unlocking it byturning it from left to right after being inserted in the slot of thebarrel.

In the foregoing description I have embodied the'preferred form of myinvention, but I do not wish to be understood as limiting myselfthereto, as I am aware that modifications may be made therein withoutdeparting from the principle, or sacrificing any of the advantages ofthis invention, therefore I reserve to myself the right to make suchchanges as fairly fall within the scope thereof.

Having thus described my invention, I claim as new and desire tosecureby Letters Patent 1. In a door look, a spindle having a locking boltmovably connected thereto, and a knob upon one of its ends, a headformed upon the opposite end of the spindle, said head having a recesstherein, a cylinder, a

barrel rotatable in the cylinder, an annular flange formed upon one endof the barrel and movably positioned over the head of the spindle, saidbarrel having a slot therethrough which communicates with the recess ofthe head of the spindle whereby a key when inserted in the slot will bereceived in the recess of the spindle soas to rotate the spindlesimultaneously with the rotation of the barrel, or to permit the spindleto be rotated independently by manually rotating the knob.

2. In a door look, a cylinder having a plurality of series of alinedrecesses disposed radially with respect to its axial center and all ofthe recesses communicating with the interior of the cylinder, aplurality of sets of yielding tumblers, each set being movable in one ofthe series of alined recesses of the cylinder, a barrel rotatable in thecylinder, said barrel and having a recess in 1ts wall in communicationwith one edge of the slot, said recess being adapted to receive each setof the tumblers of the cylinder separately when the barrel is rotated bya key so that its recess is in register with the corresponding series ofalined recesses of the cylinder, an annular flange extending from oneend of the barrel, a spindle having locking bolts movably connectedthereto and having a knob upon one of its ends, and a head formed uponthe opposite end of the spindle and movably seated in the annular flangeof the barrel, said head having a cross-shaped recess therein whichcommunicates with the slot of the barrel whereby a key when inserted inthe slot will be received in the recess of the spindle so as to berotated simultaneously with the rotation of the barrel, or to permit thespindle to be rotated independently by manually rotating the knob.

This specification signed and witnessed this twenty first day of June,A. D. 1912.

JOHN CALDWELL.

\Vitnesses:

RoB'r. B. ABBOTT, M. DERMODY.

copies of this patent may be obtained for five cents each,

by addressing the Commissioner of Patents,

Washington, D. G.

having a key slot therethrough

